Improve detecting of localStorage. Fixes #245.

twitter · May 29, 2013 · 12181b5 · 12181b5
1 parent 9b360a3
commit 12181b5
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/persistent_storage.js b/src/persistent_storage.js
@@ -9,6 +9,11 @@ var PersistentStorage = (function() {
 
   try {
     ls = window.localStorage;
+
+    // while in private browsing mode, some browsers make
+    // localStorage available, but throw an error when used
+    ls.setItem('~~~', '!');
+    ls.removeItem('~~~');
   } catch (err) {
     ls = null;
   }